There are safety nets everywhere you look, but there also are little holes in these nets–just the right size for your hand and an iPhone.

Chimeras adorn the sides of Notre-Dame de Paris.

Tip: You’ll need to get a free ticket with a specific time for entry, and you’ll do that near the north tower, around the corner from the main entrance. There’s a kiosk onsite for this, or you can use your smartphone while you sip wine at a nearby cafe.